S&W 4506 Heads-up

Vance's Shooter Supplies in Columbus, OH has about a dozen police trade-in S&W 4506s (both no-dash and -1s) in their display case. Asking price was $299. I didn't look at any up close, but they seem to be the standard cop trade-in deal: the occasional ding, some holster wear, but otherwise look OK. The gun itself is a tank of a design, so I cannot imagine them being overly worn. It looked like they had night-sights (no clue on the strength of the tritium).